Elements Organizer: Where do I find Information about the Catalog: how many photo's are in there?

I am starting with a clean new Mac and start with a clean Photoshop Organizer 13.
I will copy all photo's manually from my old mac to the Folder Pictures Adobe and I will create a new catalog.
If I want to check if I have the same amount of pictures in my new catalog as in my old one: how can I see how many photo's are in the catalog?

In the 'Window' menu (the one just before the 'Help' menu) you have an option to display by media type, photo, video, audio, pdf...
Just leave checked the type of media you want to control.

Warning: you'll be shown how manhy media in each category are in the catalog, but comparing with the number of files in your hard disk may give different answers, the organizer does not import what it considers 'duplicates' (same size in kB and date_taken).

We all have different ways to organize on our drives, so I'll only comment on a typical situation. Your folder tree for your photos is under a single master folder like 'Pictures', and you don't have any outside. If you try to do a global import from that master folder, ideally you'll get a message that no pictures have been imported. You might get a few which had been overlooked in the previous import sessions. But you'll get a message about a whole list of files already in the catalog.
A drastic solution would be to do a backup and restore (in 'custom' location) to another master folder of your own, created just under the C\: root. All the files in the catalog will be there in a new catalog.
Then you would delete all picture files from the original master folder.
Now, do you really get a big difference in file count when comparing as above?